21200319

素因数分解:

$3^3\times 7^1\times {\mathrm{23}}^1\times {\mathrm{4877}}^1$

素因数の和:4916

約数の個数: 32

約数和(自身を含む): 37463040

約数和(自身を除く): 16262721

約数列:

[1, 3, 7, 9, 21, 23, 27, 63, 69, 161, 189, 207, 483, 621, 1449, 4347, 4877, 14631, 34139, 43893, 102417, 112171, 131679, 307251, 336513, 785197, 921753, 1009539, 2355591, 3028617, 7066773, 21200319]

約数ペア:

[(1, 21200319), (3, 7066773), (7, 3028617), (9, 2355591), (21, 1009539), (23, 921753), (27, 785197), (63, 336513), (69, 307251), (161, 131679), (189, 112171), (207, 102417), (483, 43893), (621, 34139), (1449, 14631), (4347, 4877)]